This book is well written and contains a number of examples
which always help me integrate a new technology faster. It
isn’t just about the basics of WebSocket but goes into detail
about security aspects to take into account, how to get over
the hurdles present in older browsers, and how to integrate a
protocol and layer it on top of the WebSocket protocol.

Best thing about the book is I can give him the chapter on
security and make sure they can properly watch out for the
attack vectors explained in the book. Highly recommended book
if you’re looking to migrate your old long polling and move to
WebSocket.

Learn how to use WebSocket API events, messages,
attributes, and methods within your client application

Build bi-directional chat applications on the client and
server with WebSocket as the communication layer